Pretend that I reach a land where there are two types of people: smurfs, who always tell the truth, and dragons, who always lie. I meet two men, and I know that one is a dragon and one is a surf, but I don't know which one. I ask the first one "If I asked the second one what he is, what would he answer?" The first one says that he would say that he is a dragon. Which one is the surf and which one is the dragon? Could you also explain how to figured it out.
© 2023 Praveen Puri